image drag & drop box

HELLO, I am trying to figure out how to create a form, or area to all users on the internet to drag and image and drop it in the form, and and form will generate the direct link to the image, the image embed code ("<img src'"). a php script is helpful because many of the webpages are in php. i know that the form will use setdata and getdata, just trying to firgure out how.

also i am trying to find out how another form will be able to let users drop and image to a form and automatically upload the picture to a folder in the public_html directory.